/Waht am I doing wrong? Knight LK accuracy is terrible

[demented]

  Tried two different loads, first was MMP sabots, .45 caliber 250grain XTP over 100 grains of Pyrodex RS.  Second was the same bullet with Trip 7 granulated, also 100 grains. Then I tried both powders again with Thompson Centers Shokwave bullets, 250 grain.   I saw no change in accuracy potential, all shot over eight inches at 100 yards.  All using Winchester 209 primers.  Mounts have been checked and double checked, scope has been checked on a centerfire rifle to be certain its not the problem.  I'm at a loss since nothing came close, other than getting a new rifle, I have no idea where to turn. 

[fliowa]

My brother gets 2 inch groups out of his wolverine using 100 grains of loose 777 ffg and a 250 grain shockwave. Are you swabbing between shots (one wet patch followed by a dry patch)? Are you allowing the barrel to cool down between shots?

[DennyRoark]

Have you tried lowering the charge?  Equivelant volume of T7 yields higher pressures that Pyrodex.  Also, how tight are your sabots?  I think if you shoot a lighter load with the "right" sabot, you'll get it to tighten up.  80gr of Pyro with an XTP or Shockwave will thump a deer at 125+ yds with a decent trajectory.  I personally have had problems with T/C sabots (not bullets) and accuracy, but others swear by them.

[hunt-m-up]

All good ideas, drop your powder charge to 80-90 grns, swab between shots.
Also try not cleaning or only partially cleaning for 3 consecutive shots if you are cleaning between, some shoot best with a fouled barrel.
Also could try going to a heavy slug, 300 grns or more, I've had guns that prefer the longer heavier bullet.

[rimfire]

Had several Knights in our group with accuracy issues like that.  Glass bedded the stocks per instructions over the phone from Cecil at Precision Rifle and the groups went from just barely on an 8 1/2 x 11" sheet of paper down to 2" or less at 100 yards with any load between 75 and 110 grains T7 or Pyrodex.  Knight had issues with stock bedding frequently.  Their barrels were high quality, but stock fit needed help.  I would bet that is your problem.

Note we made no other changes to the guns.  Shot from same rest at same targets with same scopes and mounts that had not been removed between.  Had the same lots of powder and same bullets and sabots.  We know rebedding is what fixed them.  One was a Wolverine, one I cannot remember the model and one was the bolt action disc rifle. 

Good luck.  If it is the bedding you would be wasting your time until you corrected it.  We wasted too much powder and components before we tried re-bedding.

[demented]

 Thanks to all!  I'll do a bit more development, will try dropping powder charge volume.  As for bedding, I'm not sure an LK will be worth the expense of having this done, even thought mine is still like new, its probably not worth one hundred bucks these days.   Perhaps I might be as well off to just count my losses and go with something else.  What really ticks me off is guys go buy a Wal Mart special, dump whatever in it, seat a bullet and proceed to shoot under three inches @ 100.   Are Powerbelt Platinum bullets good?  I have three or four dozen I bought cheap to possibly try.

[flintlock]

We have 4 Knights in our hunting group, I worked up loads for each of them...Most do not like PowerBelts or that 250gr .251 Hornady bullet...Favorite loads are 100grs Pyrodex R-S and a 300gr Barnes MZ...90grs Goex FFF and a 250 Shockwave and 90grs of Pyrodex R-S and a Hornady .44 caliber 240gr XTP...

[Vic49]

Every Knight I have owned {a bunch} shot 240 or 260gr. Percision Deadcenters in supplied sabots and 100 grs. of 777 real well.

[ruffhunter]

My 1997 LK has shot under an inch at 100 with Hornandy .45 cal 300 gr mag (blk) sabots with 90-100gr of RS with no problem.

[Jim47]

There is a really quick easy way to try beeding yourself. Cut a piece of flexible plastic bottle and put in under the barrel behind the recoil lug. I've never done this myself but have read others doing it and made amzing results. Another really important thing to do is to not over tighten the barrel screws, especiall the rear one.

If you want to do a permenant bedding I wouldn't waste time or money on glass bedding.

I bedded my Rem700 years ago by simply removing the barrel and putting a shim directly under the recoil lug itself. This is not a prescribed way but it did work, but I also had to be careful in tightening the barrel screws. I ended up in making an pillars that was longer then the factiries for the front and rear. This wasn't easy and if you don't have a drill press forget it. You can also buy these pillars I'm pretty sure from Sinclairs on line. It will be necessary however to drill out the stock to allow for the oversized pillars.

One important thing to understand. Unless you are going to have your reciever glued into your stock which is very expensive, the barrel must be allowed to free float in the stock. If it doen't free float then you will end up with accuracy problems.

[Forestclimber]

Try a 300 grain Hornady XTP with 90 grains of powder.